Jami` at-Tirmidhi 3514

Al-`Abbas bin `Abdul-Muttalib said:“I said: ‘O Messenger of Allah, teach me something that I may ask Allah, [Mighty and Sublime] for.’ He (ﷺ) said: ‘Ask Allah for Al-`Āfiyah.’ Then I remained for a day, then I came and said: ‘O Messenger of Allah, teach me something that I may ask Allah for.’ So he (ﷺ) said to me: “O Abbas, O uncle of the Messenger of Allah! Ask Allah for Al-`Āfiyah in the world and in the Hereafter.”